Rail-grinding machine.



f ILP. SIMARD L A. 0. BOUCHER RAIL GRINDING MACHINE. APPLIUATIOHBLED APB. 5, 1912.

Patented July 15,1913;

2 SHEETB-SHEET Z.

l W I TNESSES ATTORNEY` As raras jerica.

EPIPHANE r. srMAan, or WALTHAM, Arm ALPHE o. Boo-CHER, or LAWRENCE,

MASSACHUSETTS.

RAIL-Gemplus MACHINE.

'and its purpose is to reduce or remove irregularities in railroad rails. It is especially useful in grinding the rails of streetrailways to smooth rough surfaces or corrugatioiis and to even up depressions. lSuch machines have been used before but they are not adjustable and the grinding wheels can only operate in a straight line parallel with the rail. One of the principal advantages of our machine` is that. it can be adjusted to grind at various angles .with the general lon-v gitudinal surface of the rail.

In the drawings, Figure 1 is a plan view` .the large front carrier wheel, bearing and hanger being shown in horizontal cential section. Fig. 2 is an elevation from the side. Fig. 3 is an elevation from the front with the front carrier wheel omitted. Fig. 4 is an enlarged side elevation of one of the carrier wheels showing the adjustable journal box or block. Fig. 5 is anenlarged central vertical section of a carrier wheel, jour` nal box and hanger. Fig. 6 is a vertical sectional view of the adjusting screw, spring, and arm for the grinding wheel. Fig. 7 is a view similar to Fig. 6 showing a modified construction. Fig. 8 is a detail of the adjustable hanger for the supporting wheel.-

In. our construction, weprovide means for maintaining a uniform pressure and of positively determining and limiting the space to be ground on the rails. This space depends upon the depth of the depression in the rails and the adjustment of the machine. In grinding depressions, it is usually desirable togrind the rail from the bottom of the depression in a longer or shorter'slope loiigitudinallv in both directions. In this way, the depression still exists but is so gradual that it does little harm. To accomplish this purpose, we mount elastically our grinding wheel` which may be of the usual emery type, and provide it with an adjustable pres- 'Specifcation of Letters Patent.

Patented Jury i5, rais;

Application led April 5, 1912. Serial No. 688,791.

sure spring whereby its pressure when once determined, is substantially uniform. It is also provided with a stop whereby the grinding wheel may recede from a certain point but cannot pass below it. To provide that the extreme lower line of action of the grinding wheel `shall be limited by straight sloping lines to the bottom of the original depression, we mount the grinding wheel and its carriers upon a truck which preferably lias two eccentrically adjustable carrier wheels ofV equal size which rest on one rail and a single carrier wheel or supporting wheel which may be larger or smaller and which rests on the other rail. The two carrier wheels on the same rail are so mounted on their axles or bearings that they can be mae.n more or less eccentric in their action and they are connected by a connecting rod so that the action of the carrier wheels will raise and lower uniformly the side of the truck on whichv they are mounted. The

grinding wheel'is mounted on thisside.

Our, machine is held together by a' light nietallieframe A preferably made-of channel iron but which may be of any other suitable material. The base of this frame 20,

21 and 22 forms preferably a triangle which .tered on their bearings, the whole device is level and in what might be called its normal position. Hanger 30 has slot-s 39 through which pass bolts 48 into a plate 49 attached to frame A. By means of these slots and bolts, the hanger may be vertically adjusted to conform to larger or smaller carrier wheels.

The motor D mounted'on the two girts 13 and 14' is secured thereon by screws, bolts or in any other suitable way and drives a shaft 40 which carries a gear 41 which may engage a gear 42' carried by shaft 43 which is carried in suitable bearings on the frame` A and extends outside thereof where it carries a sprocket 44. This driving sprocket 44 by the grinding wheel.

lui-ans of a chain 45 drives through the inediuln ot a driven sprocket. -tt the shaft 4T which carries the grinding wheel ll. Shaft lT cari-yi" i' dile bearings on a piroted traine emnprising parallel nieinbers 50 and 51 pivoted on shaft l5 and Aforming together the grinding wheel arm l?. 'lhe end ot this arin l` as shown in l-"ief-x t3 and T is pivotally connected to the bottoni ot' a grinding wheel spring adjusting .screw (30 which carries a collar-.o1 and is lidable inside a cylindrical spring easing (32 carried by a bracket' C?) fixed to nieinber 2? ot traine "bears ainst collar (3l and against the top ctspring casing (3Q normally tends to press dcwnward tl arm l" carryingl the grinding wheel E. lire adjust the action of this arn'i thi-ugh screw G0. To liinit its downward action. we preferably use. an adjusting crank (35 which engages the threads on screw 60 and bears against the top ot easing 62 on the outside. By turning this to the right or lett, the downward limit of action of the arm F is regulated.

Carrier wheels and 34 are connected by a connecting rod 39 pivoted in the same relative position on each. Screwed to each hanger 81 or 32 is a journal 70 as shown in Fig. 5 and this passes through a journal box or block 71 which is slidable in a slot 72 formed in hub 73 and which extends radially through the center of a carrier wheel 34.-. The hub 73 of this wheel is extended inward as a shell sutliciently to perinit adjusting.

bolts Vitand T5 to be passed therethrough and to bear against box 71. Preferably lock nuts 7G and 77 are used in connection therewith. A scale 78 0n the outer face of each carrier wheel hub adjoining the squared end T9 of box 71 serves as a guide when adjusting by bolts 74 and 75, the center ot revolution of each wheel. By means of these adjusting bolts the wheel action' may be made eccentric with the result that-in traveling the distance of the circumference of the carrier wheels, they will raise and lower the traine A a uniform distance.

The operation of our machine is as follows '--A ssuming that the carrier wheels are 5h :n circumference, it is evident that if .nade eccentric they will raise and lower the frame once in every 50 carrying therewith of ot an inch. The grinding wheel is set by handle (55 at the bottom of the depression. That is. so that-it cannot grind below the bottom of the depression. If it wished to grind this on a slope of 95 each way, the scale on hub 73 is adjusted for 11g of an inch making an eccentric action of This will cause a gradual lifting of the grinding wheel from depth to the surface at 25". Now if it is desired to grind from the bottom of the depression to a point 1Q sprocket -l-( mounted in suit-- spring (lll whichv Suppose adepression on each side, the hub scale is set at -lf substantially. In this case the grinding wheel will be lifted from the bottoni ot' the depression and 2,- clear ot' the rail during each revolution ot the carrier wheet and will therefore cease cutting at 1'2 if. each side of the depression. In this way, the device can be adjusted to cut on any desired slope, Of course, by centering the carrier wheels, the grinding wheel will cut parallel with the surface of the rail. By replacing the i carrier wheels by others which are larger or sinaller, the extreme cutting distance can be increased or diminished.

It is evident that a shaft and suitable gears niay be used in place ofthe chain and sprocket shown in the drawings or suitable belting maybe used. It may evenbe teasible to carry the grinding wheel directly.

upon the inotor sliatt of a light motor attached to the grinding wheel arin. Any

suitablev motor or engine whether electric,.

explosive or otherwise may be used. and any other suitable meansfor eccentrically mounting the carrier wheels may be used.

lVhat we claim as our invention and desi re t-o cover vby Letters Patent, is: ,f

l. ln a rail grindingl machine, the coinbination of a truck adapted to travel on the rails having on one side a pair ot carrier wheels in engagement with one rail and -being connected by a connecting rod and haring adjustablev bearings by which thev action otl the carrier wheels may be niade eccentric, combined with a grinding wheel adjoining the rail on which the carrier wheels travel.

2. A. rail grinding machine comprising a.

-traine, a support-ing wheel on one side thereframe, a supporting wheel on one side thereof, two carrier wheels on the other side thereof arranged one behind theother and connected by connecting rod, means for adjusting said carrier wheels eccentrically, an arm pivoted to the frame ad j acent, to the rail and between the carrier wheels, a grinding wheel4 carried thereby, a casing fixed to the frame, a screw pivoted to the grinding wheel arni and extended through the top of said casing, 'a collar carried by the screw,l a

spring between said collar and the top ot the casing, and :in-adjusting crank in engagement with the screw outside the easing as described.

t. A rail grinding machine comprising a frame, a supporting Wheel on one side thereof, two journals carried by hangers on the opposite side of the frame, and t-wo carrier wheels arranged one behind the other and connected by a connecting rod each of said wheels haring a radial slot formed in its hub7 a journal box passed over each journal and slidable intone of said slots, and adjusting bolts which pass through each carrier wheel hub and bear against a journal box. combined with a grinding wheel adjacent. to the rail-and between the carrier wheel as described.

5. A rail griiuling machine comprising a frame, a supporting wheel on one side theref oi', two journals carried by hangers on the opposite side ot the Jframe, two carrier wheels arranged one behind the other and v connected by a connecting rod each of said wheels haring a radial slot formed in its justing crank in engagement with the screw outside the casing as described.

(i. ln a rail grinding machine, a frame, a journal attached thereto,l and a carrier wheel haring a radial slot in its hub,`co1nbined with a square journal boX slidable in the slot and passed over thejournal, together with adjusting bolts which pass through the hub and engage said journal box as described.

T. ln a rail grinding machine, a frame, a supporting wheel on one side thereof. two

journals carried by hangers on the opposite side 'of the frame,` and two carrier Wheels arranged one behind the other and connected by a connecting rod, each 'of said Wheels having a radial slot formed in its hub` combined with a journal box passed,y

over each journal and slidablein one of said slots, and adjusting bolts which pass through. each carrier irheel h-ub and bear against a journal box.

S. 1In a rail'grinding inachinefa frame, a

Vsupporting wheel on oneside thereof, two

journals carried by hangers on the opposite side of the frame, and two carrier wheels arranged one behind the other and connected a connecting rod.y each ot said wheels haring a radial slot formed in its hub, comjournal and slidable in one of said slots. adjusting bolts which pass through each carrier wheel hub and bear against a journal box and grinding meansl between said carrier wheels as described.

9. A rail grinding machine comprising a frame, a supjiiortiug wheel on one side thereA of, carrier wheels` on the other side thereof arranged one behind the other and connected b fv a connecting rod. and means tor adjusting' said carrier wheels eccentrically, combined with a grinding wheel located between the carrier wheels and carried bv the frame, a spring which normally tends to keep the grinding wheel iu Contact with the rail, and an adjustable stop whereby the aC- tion of the spring on the grinding wheel mayv be limited.

ln testimonyY whereof wc hereto aflix our signatures in presence oi two witnesses.

vWitnesses z JOHN J. Dnrixif.. Fisnicn ll. licxnsox.

Vbined with a journal box passed over each j 

